Results 1 to 10 of about 6,045 (208)

Windage Loss Characteristics of Aviation Spiral Bevel Gear and Windage Reduction Mechanism of Shroud

open access: yesMachines, 2022
With the increasing speed of aviation gear, windage loss has been the main component of power loss. Reducing windage is of great significance to improving the transmission efficiency of aviation spiral bevel gear.
Linlin Li   +3 more
doaj   +2 more sources

Wind Dispersal of Natural and Biomimetic Maple Samaras [PDF]

open access: yesBiomimetics, 2021
Maple trees (genus Acer) accomplish the task of distributing objects to a wide area by producing seeds, known as samaras, which are carried by the wind as they autorotate and slowly descend to the ground.
Gary K. Nave   +8 more
doaj   +2 more sources

Calculation method of impingement depth and multiple objective optimizations of nozzle layout for aviation gears considering windage [PDF]

open access: yesScientific Reports
As the rotating speed of aviation gears becomes higher and higher, the influence of windage resistance on jet streamline must be considered in lubrication system design.
Linlin Li   +3 more
doaj   +2 more sources

A New Windage Loss Model for S-CO2 Turbomachinery Design

open access: yesApplied Sciences, 2023
A supercritical CO2 (S-CO2) Brayton cycle is a compact and simple power conversion system with competitive efficiency. However, the strong real gas effects of S-CO2 pose challenges to the design of a cycle and its components.
Dokyu Kim   +3 more
doaj   +1 more source

A computational fluid dynamic-based method for analyzing the nonlinear relationship between windage loss and pressure in a geotechnical centrifuge

open access: yesSN Applied Sciences, 2021
Temperature control is an important limitation to further increase in geotechnical centrifuge power. Although vacuum pumps can reduce windage loss, they also negatively affect heat transfer performance.
Yi-Nan Guo   +4 more
doaj   +1 more source

Numerical Calculation Analysis and Characteristic Research on Windage Loss of Oil-Jet Lubricated Aviation Gear Pair

open access: yesInternational Journal of Aerospace Engineering, 2022
The VOF (volume of fluid) multiphase transient simulation model of the windage loss of the gear pair under oil-jet lubrication was carried out by using the dynamic mesh technology with the powerful parallel computing capabilities of the Super Cloud ...
Linlin Li   +5 more
doaj   +1 more source

Seasonal Predictions of Holopelagic Sargassum Across the Tropical Atlantic Accounting for Uncertainty in Drivers and Processes: The SARTRAC Ensemble Forecast System

open access: yesFrontiers in Marine Science, 2021
The holopelagic macroalgae sargassum has proliferated across the tropical Atlantic since 2011, of consequence for coastal populations from West Africa to the Caribbean with limited early warning of major beaching events.
Robert Marsh   +8 more
doaj   +1 more source

Influence of rotor slot profile on the windage loss in a Switched Reluctance Motor for an electric autorickshaw

open access: yesEngineering Science and Technology, an International Journal, 2023
A Switched Reluctance Motor is designed for an electric auto rickshaw operating at 25 kmph. Different stator-rotor teeth combinations are worked out and the suitable combination for the application is chosen.
Arjun Seshadri   +1 more
doaj   +1 more source

Impact of stator slot geometry on the windage loss in a high‐speed linear switched reluctance motor

open access: yesIET Electric Power Applications, 2022
A linear switched reluctance motor (LSRM) is designed for electric propulsion application in a Magnetically Levitated (Maglev) train with the base speed of 7.6 m/s and operating at a maximum of 27.8 m/s.
Arjun Seshadri   +3 more
doaj   +1 more source

Physics-informed laboratory estimation of Sargassum windage

open access: yesPhysics of Fluids, 2023
A recent Maxey–Riley theory for Sargassum raft motion, which models a raft as a network of elastically interacting finite size, buoyant particles, predicts the carrying flow velocity to be given by the weighted sum of the water and air velocities (1−α)v+αw.
M. J. Olascoaga   +7 more
openaire   +2 more sources

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